gendong1 created ZOOKEEPER-4817:
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Summary: CancelledKeyException does not work in some cases.
Key: ZOOKEEPER-4817
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4817
Project: ZooKeeper
Issue Type: Bug
Affects Versions: 3.10.0
Reporter: gendong1
If the client connection is disconnected with zoo server, cancelledkeyexception
will arise.
Here is a strange scenarios.
NIOServerCxn.doIO is blocked at line 333 by the fail-slow nic.
If the delay lasts more than 30s, cancelledkeyexception will disappear.
If the delay lasts for 25s, cancelledkeyexception will arise.
When the doIO encounters the slowdown caused by teh fail-slow nic, the context
is same.
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